Firmware upgrade on my Digi Connect ME

Hi Guys,

can someone point me in the right direction for updating the firmware on my Digi Connect ME modules. I have about 8 of them and they are all running version 82000856_B. I have downloaded the POST and EOS firmware (82000867_D.bin and 82000856_F5.bin respectively) but how do I get them onto the module?

Many thanks,